Biomimetic pumping by active gill plate arrays: the fluid dynamics of mayfly naiads

建议编号：CBET-0730907主要研究人员：Kiger，Kenneth T.机构：马里兰大学学院园区的仿生抽水：主动鳃板阵：蚂蚁幼虫的流体动力学这项研究的重点是蚂蚁幼虫(若虫)作为一种可能的生物模型，在中低雷诺数流动中有效地产生外部环流。蚂蚁的一个显著特征是在腹部的背侧区域有7对颧板，在许多物种中，它们以超时的方式活跃地跳动以产生外流。这种外部通风有助于新鲜含氧水的循环，并允许蚂蚁容忍氧气浓度的波动。为了最大限度地提高在低氧条件下生存的能力，人们可能会推测，这种通风电流应该以最小的能量消耗最大的对流流速。了解这一生物平台的流动机制，也可能为未来几代自主微传感器平台的对流产生的优化提供有益的见解。PI计划确定振动元件阵列如何在粘性为主和惯性为主的区域之间转换时有效地最大限度地产生环流，并确定振动附件的性能如何受到结构灵活性和流固耦合作用所决定的耦合响应的影响。这项工作的更广泛影响将跨越几个领域，包括开发适用于为快速和可靠的化学和生物传感器网络设计新型通风设备的知识库。高中和本科生在研究中的有意义的整合。该项目将作为一个激励因素，通过在UMD的年度暑期项目主持人上向高中高年级学生描述工程科学的研究方面。最后，这项研究中要回答的问题将成为机械工程系最近开设的一门高级生物力学课程的材料基础。

PROPOSAL NUMBER: CBET - 0730907 PRINCIPLE INVESTIGATOR: Kiger, Kenneth T. INSTITUTION: University of Maryland College Park Biomimetic pumping by active gill plate arrays: the fluid dynamics of mayfly naiadsThis study focuses on mayfly naiads (nymphs) as a possible biological model for the efficient generation of external circulation currents in low to intermediate Reynolds number flows. A distinctive feature of the mayfly naiad is the presence of 7 pairs of gill plates on the lateral dorsal region of the abdomen, which in many species actively beat in a metachronal fashion to produce an external current. This external ventilation aids in the circulation of fresh oxygenated water and allows mayflies to tolerate fluctuations in oxygen concentrations. To maximize the ability to survive in poorly oxygenated conditions, one would speculate that such ventilation currents should maximize the convective flow rate with minimal energy consumption. Understanding the flow mechanics of this living platform may then also provide useful insights for the optimization of convective flow generation for future generations of autonomous micro-sensor platforms. The PI plans to determine how an array of oscillating elements effectively maximize the production of a circulation current as it transitions between a viscous-dominated and an inertia-dominated regime and determine how the performance of an oscillating appendage affected by structural flexibility and the coupled response dictated by the fluid-structure interaction. The broader impacts of the work will span several areas, including the development of a knowledge base appropriate for the design of novel ventilation devices for fast and reliable chemical and biosensor networks. Meaningful Integration of High School and Undergraduate Students in Research. The project will serve as a motivational component for describing the research aspects of engineering science to High School seniors through presentation in an annual summer program host at UMD. Finally, the questions to be answered in this research will form the basis of material to be included in a recently created upper level biomechanics course offered within the Department of Mechanical Engineering.